Machine for drilling, boring, or shaping.



No; 628,703. Patantad July ll, lass;

' W. FLETCHER. MACHINE FOR DRILLING, BORING, 0B SHAPING.

(Application filed Nov. 21, 1898.)

(no Mo l 2 Sheats-$heet I.

de l1 No. 628,703. Patented July 11, I899.

w. FLETCHER. I

MACHINE FOR DRILLING, BORING, DR SHAPING.

(Application filed Nov. 21, 1898.)

2 SheetsSheet 2.

(No Model.)

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IVALTER FLETCHER, OF NOTTINGHAM, ENGLAND, ASSIGNOR TO THE ANCU- LAR HOLE MACHINE COMPANY, LIMITED, OF LONDON, ENGLAND.

MACHINE FOR DRILLINQBQRING, OR SHAPING.

SPECIFICATION forming part of Letters Patent No. 628,703, dated July 11, 1899. Application filed November Zlll898. Serial No. 697,060. No model.)

To all whom it may concern: parallel to its longitudinal axis, and with 2. Be it known that I, WVALT R FLETCHER, a slot 12 which is inclined to the said axis. subject of the Queen of Great Britain, resid- Pins cl (1, which project from the under side ing at Nottingham, England, have invented of the plate Cl, extend into and engage with 5 new and useful Improvements in Machines the inclined slots D 73 111 the slides 17, and confor Drilling, Boring, or Shaping, of which the centric slot-s c e are made in the plate a, so following is a specification. that set-screws ff can be passed through the This invention relates to machines fordrillsaid concentric slots 6 c and the longitudinal ing, boring, or shaping of the kind described slots b in the slides b and screw into holes in 1o inthe specification of Patent No. 452,169 and the head-stock A in order to clamp the slides comprises the improvements hereinafter dcb in any position to which they may be ad-- scribed. In such machines as hitherto made justed. To adjust the said slides, the setit has generally been necessary to change the screws f f are loosened, and the plate a is templet each time it is desired to alter the turned relatively with the head-stock A, so 15 shape or size of the hole or article to be drilled, that the slides are caused to move in a radial bored, or shaped. This changing of the temdirection and either inward or outward by the plet is troublesome and causes considerable engagement of the pins cl cl with the slots 19 loss of time, and it is the object of this in- IF, the longitudinal slots 1) allowing of the ravention to provide means whereby it is disdial movement. To enable the plate ato be 2o pensed with. To this end I provide an adeasily turned, I make use of a device such as justable templet, and I sometimes further that illustrated in Figs. 2 and 5, the said defurnish the drill-spindle with a conical roller, vice comprising a set-screw g, which works in by adjusting the position of which the movea lug h, screwed upon the plate a, the end of ment of the drill or other tool can be varied the said screw g bearing against a lug/i, rig- 2 5 as desired. idly attached to the head-stock A. It will be In the accompanying drawings, Figure 1 is obvious that by turning the screw 9 the plate a sectional elevation of the upper part'of the d can be turned relatively with the headtool-carrying head or head-stock of such a stock A. machine. Fig. 2 is a plan thereof. Fig. 3 is It is'thus clear that by suitably adjusting 0 a plan view of the head-stock with the temthe distance to which the slides b, which with plet removed, and Figs. 4c and 5 are views of the annular plate a. collectively form the details. Fig. 6 is a view similar to Fig. 1' of templet against which the roller D rotates, the modified construction, and Fig. 7 is a secproject beyond the inside face of the plate a tional plan thereof. l the size of the hole or article which is drilled, 5 Referring first to Figs. 1 to 4, A is the t0olbored, or shaped is determined. Furthercarryinghead or head-stock, whichis adapted more, in practice I find it advantageous to. to be reciprocated in the main framing of the employ eight slides 19, with their correspond machine in the usual manner, and B is the ing slots, the said slots being placed relatively sleeve which carries the drill spindle and to one another in the manner indicated in go 4.0 which is provided at its lower part with an or- Figs. 2 and 3. By employing this. arrangedinary ball or spherical bearing C and at its ment I am enabled with the same templet upper end with the roller D. device to drill or bore holes or to shape an The improved or adjustable templet device article of a square, triangular, or hexagonal which I employ comprises the annular plate a shape by utilizing different combinations of 5 and slides b, one of which is shown separately the slides b. p p

in Fig. 4. The upper face of the head-stock, In the arrangement illustrated in Figs. 6 in which the templet rests, is furnished with and 7 the variation in the amount of movea projecting rim a to retain the templet in ment allowed to the drilling or shaping tool v position thereon and with shallow slots or reis controlled by adjusting the position of the too 50 cesses 0, so as to form guides for the slides 12. roller instead of' by the templet, which in this Each slide 7) is formed with a slot 1), which is case is not adjustable in respect to size. The

said templet comprises a plate or ring j, which fits into a groove or slot in the headstock A and is fixed therein by the clamps j j and has screwed to it plates is, which project into the ring j and collectively form the templet against which the roller slides. This roller is in the form of a frustum Z of a cone and is keyed upon a spindle m, which fits in a hole at, bored in the sleeve B. This spindle m is provided at its upper part with a slotted eye m, with which engages a pin m upon a fork of, which can turn upon the end of a screw 0, which passes up through the forked end of a bracket E, secured to the head-stock A of the machine. A spur-wheel o is mounted as a nut upon the said screw 0 between the fork ends, and a spur-wheel 0 gears with the wheel 0, the said Wheel 0 being keyed to a spindle 0 having a handwheel 0 whereby it can be rotated. With this arrangementit will be obvious that when the sleeve Bis rotated in the usual manner it carries with it the spindle m, and thereby the cone Z, which is held against the templet in the ordinary way. The upper end of the spindle m turns upon the end of the screw 0, as above mentioned, and the eye m allows it the necessary movement given by the templet and cone. To vary the size of the hole or article being drilled or shaped, the handwheel 0 is turned so as to rotate the wheel 0 which turns the wheel 0, thereby imparting a longitudinal movement to the screw 0, so as to raise or lower the cone Zwith respect to the templet. To alter the configuration of the hole or article being bored or shaped, the number and position of the plates 71) are varied as required.

It will be observed that in the constructions shown and described the shape of the field of operation of the tool or the shape of the path of the tool can be regulated without the necessity of having a series of templets of different shapes, and the size of the field of operation of the tool can be varied by varying the distance of the points of contact between the roller and the removable blocks from the axis of rotation of the tool-carrying shaft. The inconvenience and expense of having a series of templets for every variation in the size and shape of the work are thus avoided.

Having now particularly described and ascertained the nature of my said invention and in what manner the same is to be performed,

' shape of the path. of the tool, and means for securing said blocks to the templet, whereby by removing certain of said blocks, the shape of the path of the tool can be varied without changing the templet, substantially as described.

drilling and shaping, the combination with the tool-operating shaft provided with a roller, of a templet, a plurality of separate removable blocks, adapted to engage the said roller to determine the shape of the path of the tool, means for securing each of said blocks to the templet, whereby certain of said blocks can be removed to vary the shape of the path of the tool, and adjusting mechanism for said blocks for Varying the distance between the points of contact of said roller with said blocks from the axis of the tool-operating shaft, to increase or diminish the path of the tool, without removing the templet, substantially as described.

" 3. In a machine forboring, drilling or shap ing, the combination with the tool-carrying shaft provided with a roller, of the templet comprising a series of radially-movable movable blocks having portions adapted to engage said roller to regulate the shape of the path followed by said tool, and means for moving said blocks toward and from the axis of said shaft to Vary the size of the field of operation of said tool, substantially as described.

5. In a machine for boring, drilling or shaping, the combination with the head-stock provided with a series of radial grooves and the tool-carrying shaft provided with a roller, of the templet comprising a series of removable and radially-movable blocks having portions adapted to engage said roller, located in said grooves, an annular ring having portions engaging said blocks for moving them radially toward and from said roller and an adjusting device for moving said ring annularly, substantially as described.

6. In a machine for boring drilling or shapin g, the combination with the head-stock provided with a series of radial grooves and the tool-carrying shaft provided with a roller, of the templet comprising a series of removable and radially-movable blocks having portions adapted to engage said roller located in said grooves, and an annular ring having portions engaging said blocks for moving them radially toward and from said roller, an adj usting device for moving said ring annularly to adjust said blocks simultaneously and an independent clamping device for each of said blocks for securing the same rigidly to the head-stock, substantially as described.

7. In a machine for boring, drilling or shapin g, the combination with the head-stock provided with a central opening and an annular part having a series of radiallydisposed grooves or recesses therein, of a tool-carrying shaft passing through said opening and provided with a roller, a series of blocks located in said grooves or recesses, provided each with a part. for engaging said roller, and with a cam-recess, an annular plate provided with a series of pins engaging the cam-recesses of said blocks, an adjusting device for moving said plate annularly to force said blocks toward or from the said shaft and an independ- 1o ent clamping device for securing each of said blocks to the head-stock in its adjusted positions, substantially as described. a

I WALTER FLETCHER.

Witnesses: DOUGLAS E. STORER, THos. H. 0001;. 

